Roller-bearing.



.PAUL F. BUSSMAN, OF BUFFALO, NEW YORK.

nonm'n nnanms.

Specification of Letters Patent.

Patented .nm. as, 1908.

Application filed November 28. 1906. Serial No. 345.429.

To all whom it may concern:

Be'it known that I, PAUL F. BUSSMAN, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented a new and useful Improvement in Roller-Bearings, of which the following is a specification.

This invention relates more particularly to taper roller bearings.

In bearings of-this type, the lubricant has a tendency to move outward under the influence of centrifu al force, causing the inner port-ions of the ro lers'to run dry.

The object of my invention is to so construct the rollers as to counteract this tendency and insure a uniform distribution of the lubricant over the treads or surfaces of the roller race.

In the accompanying drawing: Fi ure 1 is a horizontal section of a bearing em odying the invention, the plane of the section being immediately above the rollers and the base being omitted. F ig. 2 is a vertical central section of the bearing.

Similar letters 'of reference indicate corright or left, according to the direction of responding parts in both figures.

indicates a vertical shaft sup orted by the bearing and havin its lowerem arranged in a socket b formed in a suitable base B.

C, C are the bearing cones or treads forming the race in which the tapering rollers D run freely. The rollers may be -provided with the usual end pins (1 journaled in C011- centric retaining rings E, F. The lower bearing cone C rests upon the base B, and the shaft carries an adjusting collar G which rests upon the upper bearing member C.

The rollers are arranged radially and equidistant in the race in the customary manner with suilicientinterveningspace to keep them out of contact with one another. Each roller is corrugated transversely, or in other words, provided with a series of annular ribs or project-ions d, preferably of rounded or convex form upon the salient faces of which the roller runs, thus reducing friction accordingly. The ribs of each roller are offset or out of line with those of the rollers immediately in front and in rear thereof and the corresponding ribs of adjacent rollers are. fprogressively arranged closer to the axis 0 the bearing. By this arrangement, the rollers form collectively treads of the race ten one or more spiral series of annular projections which in rollin over the walls or to crowd or deflect the customary soft lubricant toward the axis or the periphery of the bearin according to thedirection in which t e shaft rotates. As the lubricant tends to work' toward the periphery of the bearing, the offset ribs of ad acent rollers are arranged to trend in the proper direction to counteract such tendency and thus maintain a practically even distribution of the lubrlcant over the bearin cones or surfaces. The dotted lines in i ig. 1 indicate'the spiral trend of the ribs.

The grooves between the ribs of the rollers form cavities which become filled with the lubricant andfurther check its tendency to move toward the outer edge of the bearing. These grooves also form pockets for receiving any grit in the lubricant, thus preventing the grit from entering between the salient faces of the ribs and the walls of the race and grinding the bearing.

The same bearin may be used either rotation of the shaft, by simply reversing it from one position to the other.

I claim as my invention:

1. In a roller bearing, the combination of a race, and rollers arranged therein and pro-' vided with lubricant-deflecting portions arranged side b side, the deflecting portions of adjacent ro lers being offset on spiral lines. substantially as set forth.

.2. In a roller bearing, the combination of a race, and taper rollers arranged therein and provided with annular ribs or projections, the ribs of adjacent rollers being offset on spiral line's, substantially as set forth.

3 In a roller bearing, the combination of a race, and taper rollers arran ed therein and provided with convex. annu ar ribs arranged side by side, the ribs of adjacent rollers being ofl'set progressively .from' the periphery toward the-center of the bearing, substantially as set forth.

Witness my hand this 19th day of November, 1906'.

PAUL F. BUSSMAN. Witnesses:

CARL F. Gavan, E. M. GRAHAM. 

